Columbia Basin Performance Measures

PIT Tag Exposure Results

graph

PIT-Tagged Wild Spring/Summer Chinook Query Parameters
Year2024
ProjectLower Monumental
River ParameterTailrace TDG Percent
Critical Tailrace TDG Percent Value120 %
Calculate ExposureAbove Critical Value
River Parameter Data FillNo
Query Dates1/1 - 12/31
Total Run Period (Mar 21 - Apr 30)
Total Number of Fish Observed116
Percent of Total Run Analyzed [Number Observed]100 % [116]
Tailrace TDG Percent Exposure Index118.11 %
Percent of Fish Exposed [Number Exposed]15.5 % [18]
Number of Days Fish Exposed5
Middle 80% of Run Period (Apr 9 - Apr 23)
Number of Fish Observed95
Percent of Middle 80% of Run Analyzed [Number Observed]100 % [95]
Tailrace TDG Percent Exposure Index118.45 %
Percent of Fish Exposed [Number Exposed]9.4 % [9]
Number of Days Fish Exposed2
Middle 50% of Run Period (Apr 14 - Apr 22)
Number of Fish Observed76
Percent of Middle 50% of Run Analyzed [Number Observed]100 % [76]
Tailrace TDG Percent Exposure Index118.61 %
Percent of Fish Exposed [Number Exposed]11.8 % [9]
Number of Days Fish Exposed2
Run Dates
First Day of RunMar 21
5% of Run passedMar 30
10% of Run passedApr 9
50% of Run passedApr 20
90% of Run passedApr 23
95% of Run passedApr 28
Last Day of RunApr 30
Date(s) When Tailrace TDG Percent Crosses 120 %
Apr 16, Apr 18, Apr 27